Home / 145,934.75-201,390.23-78,866.75

Finding the Fourth Proportional to 145,934.75, 201,390.23 and 78,866.75

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Solution

The fourth proportional to 145,934.75, 201,390.23 and 78,866.75 is: 108,836.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,934.75 : 201,390.23 = 78,866.75 : x
  2. Step 2: Convert to fraction form
    145,934.75/201,390.23 = 78,866.75/x
  3. Step 3: Cross multiply
    145,934.75x = 201,390.23 × 78,866.75
  4. Step 4: Simplify right side
    145,934.75x = 15,882,992,921.85
  5. Step 5: Solve for x
    x = 15,882,992,921.85/145,934.75
  6. Step 6: Final answer
    x = 108,836.26

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.